Re: [boost] Re: Perfect Forwarding (almost)

From: Daniel Wallin (dalwan01_at_[hidden])
Date: 2004-02-08 17:20:44

David Abrahams wrote:

> Daniel Wallin <dalwan01_at_[hidden]> writes:
> 
> 
>>With Mojo you would do something like:
>>
>>   struct X : moveable<X>
>>   {
>>       X(X&);
>>       X(constant_ref<X>);
>>       X(rvalue_ref<X>); // move constructor
>>   };
>>
>>And it would always move from rvalues. 
> 
> 
> 
> Meaning that you could pass an X rvalue by-value to an X parameter
> without any deep copying?

Yes.

>>The intrusive part was that to
>>solve the whole "binding rvalues to const&" problem you needed to return
>>some special wrapper type:
>>
>>   moved<X> f();
> 
> 
> Oh, really?  Too bad; I guess this isn't really much of an innovation
> then.

I don't know, it's still cool. Maybe your version breaks less rules, or
breaks the rules less? ;) I'm not familiar enough with these rules to
say.

-- 
Daniel Wallin